Printing-machine



BHL. GILMMV.v Printing-Machine.

No. 224,897. Patented; Feb 24, 1880.

` l. wxTNassEs l m ATTORNEY UNITED STATES EDWARD L. GILMAN, OFSOMERVILLE, ASSIGNOB TO HENRY W. BEAGG PATENT OFFICE.

OF BOSTON, MASSACHUSETTS.

PRINTING- MACHINE.

SPECIFICATION forming part of Letters Patent No. 224,897, dated February24, 1880.

l Application filed March 29, 1879.

To 'all whom 'it may concern Be it known that I, EDWARD L. GILMAN, ofSomerville, in the county ot' Middlesex and State of Massachusetts, haveinvented a new and valuable Improvement inPrinting-Presses; and I dohereby declare that the follow-in g is a full, clear, and exactdescription of the construction and operation ofthe same, referencebeing had to the annexed drawings, making ay part of this specification,and to the letters and igures of reference marked thereon.

Figure 1 of the drawings is a representation of a longitudinal centralsection of my printing-press, and Fig. 2 is a transverse section ofpresses.

the same; and Figs. 3 and 4 are details.

This invention has relation to printing- The nature of the inventionconsists in the l transverse finger-holding stripcarried b v the benttension-arms pivoted to the platen and engaging a stop, and pivotedtripping-bars also connected to the tplaten and to said tension-arms, ashereinafter shown and described. In the accompanying drawings, theletter A designates the table of the press; B, the

bed; and O, the chase or 'raincior holding` the type, having in its facethe oblong depressions a., formed with beveled sides, and provided withholes b i'or the passage ofthe bolts c, having elongated heads d, ofsimilar size and forni v to the depressions a, and designed to litclose- `ly therein when the bolts dare passed through the holesVin thebottoms of said depressions.

thumb-screws b.

These bolts also pass through corresponding `holes e and g in the bedand table"7 and are secured underneath the latter by means of By meansot' thebeveled bolts and the recesses in the face ot the chase, in whichthey are received in a wedging manner, the position of the chase isveryaccurately iixed when the bolts are drawn home by the action of theu carrying' the fingers F, and having on its ends the slips l, which,coming in contact with the stops p, serve to raise the fingers from theface of the platen.

Behind the upper portion ot' the platen is arranged a transverse rod,Gr, which is pivoted tc lugs on the platen. This rod is provided with atension-spring, n, and carries at each end a bentl arm, H', whichextends upward over the margin ofthe platen, and is secured to one endot' the transverse strip L, which is designed, being actuated by thetension-spring, to firmly clasp the tops of the ngers. The lower ends ofthese arms H engage with the ends of the trips or leverbars T, which areforked or otherwise formed to permit this engagement without binding.These bars T are pivoted to lugs in the lower portion of the platen,and, extending below said lugs, are provided with forward projections,z, which are arranged bythe side of the slips l ot the finger-shaft, andhave the front or bearing edges a little forward of those ot said slips,in order to come rst in contact with the stops p.

The operation is as follows: When the platen rises and tilts backwardafter turning, the projections z of the trips T strike the stops p andthrow back the bent arms H', and with them the holding-strip L,releasingthe iingers F, which are then raised by the action of the slipsl, which come into engagement with the stops p a little later in themovement ot' the platen. In the reverse movement the tingers close uponthe platen, and the holdingstrip afterward is brought to bear upon theends.

Having described my invention, what I,

of two witnesses.

EDWARD L. GILMAN. Witnesses:

W. F. LovEJoY, A. Q. CARPENTER.

